http-image-size-promise:承诺通过 HTTP 或 HTTPS 从文件中检测图像尺寸

http-image-size-promise 承诺通过 HTTP(S) 检测图像文件的尺寸，使用 var httpImageSizePromise = require ( 'http-image-size-promise' ) ; httpImageSizePromise ( 'http://placehold.it/350x150' ) . then ( function ( dimensions ) { dimensions ; //=> {width: 350, height: 150, type: 'gif'} } ) . catch ( function ( reason ) { console . warn ( reason ) ; } ) ; 安装 npm install --save http-image-size-promise 支持的图像格式 检查